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The advection-diffusion model for atmospheric pollutants dispersion

Ahmada O. Ali, Narsis A. Mtega, Mahera C. Wilson

Abstract


A two dimensional mathematical model for computation of the ambient air concentration of reactive pollutants emitted from ground level sources is described.The outputs presented in graphical form show that like other parameters, depth has significant influence on the dispersion of pollutants. The results shows that the drift velocity of air moves the polluted zone from one region to another at the rate which is proportional to its magnitude. The eventual chemical reaction between the pollutant, the depth and one or more air components acts as a pollution sink or fall out and hampers the horizontal expansion of polluted zone.

Keywords


advection-diffusion equation, atmospheric pollution, Fick’s laws, discretization of advection-diffusion equation

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